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Fotoestabilização do cloreto de polivinilo

Fotoestabilização do cloreto de polivinilo

Ali Hasan / Emad Yousif / Ruba Ahmed

59,14 €
IVA incluido
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Psicología
ISBN:
9786209295638
59,14 €
IVA incluido
Disponible

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Sobre IBD

Todos os polímeros orgânicos comerciais degradam-se ao ar quando expostos à luz solar, embora exista uma grande variedade de suscetibilidades foto-oxidativas. Normalmente, é a absorção de comprimentos de onda próximos do ultravioleta (UV) que leva a reações de quebra de ligações e à consequente perda de propriedades físicas úteis e/ou descoloração. A exposição à luz solar pode ter efeitos adversos sobre o grande interesse útil dos produtos plásticos. A radiação ultravioleta (UV) pode quebrar as ligações químicas num polímero. A fotodegradação causa rachaduras, desgaste, alterações de cor e perda de propriedades físicas. O cloreto de polivinilo é um dos materiais termoplásticos mais amplamente utilizados no mundo devido às suas propriedades valiosas, amplas aplicações, alta resistência química, propriedades de barreira e baixo custo. Durante o processamento, armazenamento e utilização, o PVC degrada-se quando exposto a altas temperaturas, altas tensões mecânicas ou luz ultravioleta.

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